Diamond cut



FIG. 1 is a top plan view of a diamond cut showing my new design;

FIG. 2 is a bottom plan view;

FIG. 3 is a perspective view;

FIG. 4 is a perspective view of a diamond cut showing a second embodiment of my new design; and,

FIG. 5 is a top plan view of FIG. 4. 

The ornamental design for a diamond cut, as shown and described. 